© ISO/IEC 2006 – All rights reserved ISO/IEC JTC 1/SC 34 Date: 2006-06-19 ISO/IEC FDIS 13250-3 ISO/IEC JTC 1/SC 34/WG 3 Secretariat: SCC Information Technology — Topic Maps — Part 3: XML Syntax Warning This document is not an ISO International Standard. It is distributed for review and comment. It is subject to change without notice and may not be referred to as an International Standard. Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation. Document type: International Standard Document subtype: Document stage: (50) Approval Document language: E ISO/IEC FDIS 13250-3 ii © ISO/IEC 2006 – All rights reserved ISO/IEC FDIS 13250-3 Copyright notice This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted under the applicable laws of the user's country, neither this ISO draft nor any extract from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permission being secured. Requests for permission to reproduce should be addressed to either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.ch Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted. Contents Page Foreword................................................................................................................................................................... v Introduction............................................................................................................................................................. vi 1 Scope........................................................................................................................................................... 1 2 Normative references.................................................................................................................................. 1 3 Terms and definitions................................................................................................................................. 1 4 Syntax definition......................................................................................................................................... 2 4.1 About the syntax......................................................................................................................................... 2 4.2 Deserialization............................................................................................................................................. 2 4.3 Common syntactical constructs................................................................................................................ 2 4.3.1 Common declarations................................................................................................................................. 2 4.3.2 The reifier attribute...................................................................................................................................... 3 4.3.3 The href attribute......................................................................................................................................... 3 4.3.4 Creating IRIs from strings.......................................................................................................................... 3 4.4 The topicMap element............................................................................................................................... 3 4.5 The topic element...................................................................................................................................... 3 4.6 The itemIdentity element...................................................................................................................... 4 4.7 The subjectLocator element.................................................................................................................. 4 4.8 The subjectIdentifier element............................................................................................................ 4 4.9 The instanceOf element........................................................................................................................... 4 4.10 The name element........................................................................................................................................ 5 4.11 The value element...................................................................................................................................... 5 4.12 The variant element................................................................................................................................. 5 4.13 The scope element...................................................................................................................................... 5 4.14 The type element........................................................................................................................................ 6 4.15 The occurrence element........................................................................................................................... 6 4.16 The resourceData element...................................................................................................................... 6 4.16.1 General......................................................................................................................................................... 6 4.16.2 Deserialization............................................................................................................................................. 6 4.16.3 Canonicalizing embedded XML................................................................................................................. 6 4.17 The resourceRef element......................................................................................................................... 7 4.18 The association element......................................................................................................................... 7 4.19 The role element........................................................................................................................................ 7 4.20 The topicRef element............................................................................................................................... 7 © ISO/IEC 2006 – All rights reserved iii ISO/IEC FDIS 13250-3 4.21 The mergeMap element............................................................................................................................... 8 5 Conformance............................................................................................................................................... 8 Annex A (normative) A RELAX-NG schema for XTM 2.0....................................................................................... 9 Annex B (informative) The XTM 2.0 DTD............................................................................................................... 11 Annex C (informative) An XML Schema schema for XTM 2.0.............................................................................. 14 Annex D (informative) Differences with XTM 1.0.................................................................................................. 18 Annex E (informative) Subject identifiers for defined terms............................................................................... 19 Bibliography........................................................................................................................................................... 20 iv © ISO/IEC 2006 – All rights reserved ISO/IEC FDIS 13250-3 Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. ISO/IEC 13250-3 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information Technology, Subcommittee SC 34, Document Description and Processing Languages. ISO/IEC 13250 consists of the following parts, under the general title Information Technology — Topic Maps: — Part 1: Overview and Basic Concepts — Part 2: Data Model — Part 3: XML Syntax — Part 4: Canonicalization — Part 5: Reference Model © ISO/IEC 2006 – All rights reserved v ISO/IEC FDIS 13250-3 Introduction XTM (XML Topic Maps) 2.0 is a syntax for the interchange of Topic Maps. The syntax is not designed to be extended or modified. Ease of human authoring was not prioritized during the design of